Chopping glass fiber rovings

Fibers and PU in composite material

The LFI-PU (long-fiber injection polyurethane) process is used in the production of high-strength, lightweight parts. The LFI process unit performs three main tasks that are crucial for ensuring the quality of the end product.

Core features

The flow-optimized geometry of the cleaning piston generates a hollow, hose-shaped material flow

The glass fibers chopped by the cutter head are forced by air pressure through the cleaning piston into the center of this hose-shaped flow where they are wetted with the reaction mix and, simultaneously, poured into the open cavity

Benefits for the customer

Versatile application, such as for instrument panel supports, interior parts and in combination with sandwich components in a honeycomb

Direct wetting of the fibers for maximum adhesion of the polyurethane matrix to the reinforcement material

Fiber quantity and length can be configured based on requirements, allowing for variation in them even in one article

Applications

Radiator grill for utility vehicle

Radiator grill for utility vehicle

Material: PU with 25% long-fiber reinforcement

Technology: LFI with thermoformed decorated film, fiber length and volume content can be locally adapted to the component requirements